GM LS TKX 5-Speed Transmission Package

GM LS TKX 5-speed Transmission Package

The Bowler Performance GM LS TKX 5-Speed Transmission Package is a complete, bolt-in manual transmission solution for LS- and LT-based engine swaps. Built around Tremec’s TKX 5-speed, this package delivers modern shift quality, excellent torque capacity, and proven durability for high-performance street and restomod applications.

This package is engine-specific, not vehicle-specific, giving you flexibility across a wide range of GM chassis. Bowler offers optional vehicle-specific crossmembers and hydraulic clutch conversions if needed.

Engine Compatibility

• Compatible with GM LS and LT engines
• Works with all 6-bolt and 8-bolt crankshaft configurations

Available Transmission Options

Choose the TKX gear ratio that best fits your driving style:

• TCET18083
  Gear Ratios: 3.27 / 1.98 / 1.34 / 1.00 / 0.72
  Ideal for aggressive acceleration and performance builds

• TCET17722
  Gear Ratios: 2.87 / 1.89 / 1.28 / 1.00 / 0.81
  Better suited for highway cruising and balanced street use

What’s Included

This package includes everything required for a complete LS TKX installation:

• Tremec TKX 5-Speed Transmission (GM configuration)
• Cast aluminum bellhousing with required hardware
• Tilton 6000-series hydraulic throwout bearing
  – Includes -4AN inlet and remote bleeder
• RAM single-disc clutch kit
  – Spring hub disc
  – Billet steel flywheel
  – Rated up to 550 HP
• Reverse light and electronic speedometer pigtail connectors
• Energy Suspension transmission mount
• 3 quarts Royal Purple Synchromax fluid
• Roller pilot bearing
• 12-month warranty

Important Notes

• This package is not vehicle-specific
• Crossmember, driveshaft, and hydraulic clutch components may vary by application
• Bowler offers additional components to complete your install if needed

Instructions

Tremec TKO & T-56 Installation Instructions